An 8th level War Cleric takes Magic Initiate to access the Druid cantrip Primal Savagery (XGE p164). The War Domain feature Divine Strike (PHB p63) grants the ability to to add 1d8 of damage to a weapon attack.
Can the Cleric use Divine Strike to add 1d8 of damage to the attack from Primal Savagery?
I contend the spell creates the claws (or bite), and that they count as a weapon for an attack. So, the Cleric should be able to use Divine Strike to add 1d8 acid damage. I think Jeremy Crawford's clarification (still somewhat open for debate) on Twitter seems to support this.
However, the DM ruled that it was a spell attack, using spell modifiers to hit, and therefore was not a weapon attack and not eligible for Divine Strike add-on.
Does the fact that the claws are formed from magic preclude their status as weapons, and are then not eligible for Divine Strike add-on?